Tank-barge.



C: P. M. JACK.

TANK BARGE.

APPLICATION FILED MAR. 22. 1918.

1 Patented Nov. 12, 1918.

Unvenbor, Charles P M Jack A ttor Heu UNITED STATES PATENT OFFICE.

CHARLES P. M. JACK, OF NEW YORK, N. Y.

TAN K-BARGE.

Application filed March 22, 1918.

To all whom it may concern:

Be it known that I, CHARLES PETER MITCH- ELL JACK, a subject of King George V, Great Britain, and a resident of the city of New York, borough of Manhattan, county of New York, and State of New York, United States of America, have invented certain new and useful Improvements in Tank-Barges, of which the following is a specification.

This invention relates to vessels for carrying liquids in bulk, usually various grades of oil, and comprises a construction particularly suitable for barges, wherein, because of smaller size and lighter weight, forms of construction and materials employed in building cylindrical tanks may be utilized for almost the entire structure.

The object of this invention is to provide a design embodying forms, which, by reason of their demand for other uses, are easily obtainable, and at a less cost than if specially manufactured for the vessel. A fur ther object is to provide a design, utilizing such forms, which will possess rigidity and stability, which will not roll greatly, and with not capsize.

In the accompanying sheet of drawings which forms a part of this application Figure 1 is a side elevation with parts broken away showing a barge constructed in accordance with my invention,

Fig. 2 is a plan of the vessel, and

Fig. 3 is a transverse section through the vessel on the lines III-III of Fig. 2.

The hull of the vessel comprises a how 1 and a stern 2 the latter preferably containing the engine. The bottom 3 of the middle and main portion of the hull is a cylindrical section of slight curvature and comprising about sixty degrees of the cylinder. The sides 4, 4 of this portion of the hull are continuations of the bottom and are cylindrical sections of much shorter radius. At suitable intervals transverse vertical bulkheads 5, 5, are carried across the hull. Between the bulk Specification of Letters Patent.

Patented'Nov. 12, 1918.

Serial No. 224,074.

heads the tanks are formed by substantially semi-circular tops 6, 6 which are joined along their curved ends to the bulkheads and along their straight edges to the bottom of the hull along the lines about where the curvature changes.

The spaces between the sides of the hull and the tank tops are floored over and buoyancy sections are thereby formed, which by reason of their location are of maximum utility in giving stability to the vessel. Portions of these side sections at 7, 7 may be taken for fuel oil.

By reason of the arch form of tops for the tanks it is not necessary to provide them with expansion heads in which the liquid level must be maintained, and the tanks may be partly filled without detracting from the sea-worthiness of the vessel.

What I claim as new, and desire to secure by Letters Patent of the United States, is

l. A tank vessel comprising a hull, and a horizontal tank formed between a substantially semi-circular top and the bottom of the hull to which the edges of the top are joined, the portion of the hull which forms the tank bottom being of flatter curvature than the tOp of the tank, and buoyancy sections formed between the sides of the tank and the hull, substantially as described.

a 2. A tank vessel comprising a hull, and a series of horizontal tanks formed between substantially semi-circular tops and the bottom of the hull to which the edges of the tops are joined, the portion of the hull which forms the tank bottoms being of flatter curvature than the tops of the tanks, transverse bulkheads for the hull which form the ends of the tanks, and buoyancy sections formed between the sides of the tanks and the hull, substantially as described.

Signed by me at New York, N. Y., this 21st day of March, 1918.

CHAS. P. M. JACK.

Copies 01 this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

